We never ask for personal info, such as credit cards or passwords, in emails. However, from time to time, we’ll ask you to update your recovery info after signing in. You’ll also get a notification titled “Your Yahoo account information has changed” if any info in your account settings are updated.

Viewing from web-based email - Emails from us include a Yahoo icon next to the subject or sender. If you don’t see it, then the email isn’t from Yahoo.

Viewing from 3rd-party apps - The Yahoo icon won’t appear in apps, even if the email is truly from us. Check the sender’s email address without opening the email by mousing over the sender’s name in your Inbox.